Musculoskeletal kinematics during voluntary head tracking movements in primate

Hyeonki Choi*, Emily Keshner, Barry W. Peterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


In this study we examined connections between vertebral motion and patterns of muscle activation during voluntary head tracking movements. A Rhesus (Macaca mulatta) monkey was trained to produce sinusoidal tracking movements of the head in the sagittal plane while seated. Radio-opaque markers were placed in the cervical vertebrae, and intramuscular patch electrodes were implanted to record from eight neck muscles. Videofluoroscopic images of cervical vertebral motion, and EMG (electromyographic) responses were simultaneously recorded. Experimental results demonstrated that head and vertebrae moved synchronously and that motion occurred primarily at skull-C 1, Ce6-C7 and C7-T1. Our findings illustrate that although the biomechanical constraints of each species may limit the number of solutions available, it is the task requirements that appear to govern CNS (central nervous system) selection of movement behaviors.

Original languageEnglish (US)
Pages (from-to)32-39
Number of pages8
JournalKSME International Journal
Issue number1
StatePublished - Jan 2003
Externally publishedYes


  • Electromyography
  • Head Tracking
  • Neck Muscles
  • Vertebral Alignment
  • Videofluoroscopy

ASJC Scopus subject areas

  • Mechanical Engineering


Dive into the research topics of 'Musculoskeletal kinematics during voluntary head tracking movements in primate'. Together they form a unique fingerprint.

Cite this